19519920

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{1291}}^1$

素因数の和:1320

約数の個数: 160

約数和(自身を含む): 76899840

約数和(自身を除く): 57379920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1291, 1512, 1680, 1890, 2160, 2520, 2582, 3024, 3780, 3873, 5040, 5164, 6455, 7560, 7746, 9037, 10328, 11619, 12910, 15120, 15492, 18074, 19365, 20656, 23238, 25820, 27111, 30984, 34857, 36148, 38730, 45185, 46476, 51640, 54222, 58095, 61968, 69714, 72296, 77460, 81333, 90370, 92952, 103280, 108444, 116190, 135555, 139428, 144592, 154920, 162666, 174285, 180740, 185904, 216888, 232380, 243999, 271110, 278856, 309840, 325332, 348570, 361480, 406665, 433776, 464760, 487998, 542220, 557712, 650664, 697140, 722960, 813330, 929520, 975996, 1084440, 1219995, 1301328, 1394280, 1626660, 1951992, 2168880, 2439990, 2788560, 3253320, 3903984, 4879980, 6506640, 9759960, 19519920]

約数ペア:

[(1, 19519920), (2, 9759960), (3, 6506640), (4, 4879980), (5, 3903984), (6, 3253320), (7, 2788560), (8, 2439990), (9, 2168880), (10, 1951992), (12, 1626660), (14, 1394280), (15, 1301328), (16, 1219995), (18, 1084440), (20, 975996), (21, 929520), (24, 813330), (27, 722960), (28, 697140), (30, 650664), (35, 557712), (36, 542220), (40, 487998), (42, 464760), (45, 433776), (48, 406665), (54, 361480), (56, 348570), (60, 325332), (63, 309840), (70, 278856), (72, 271110), (80, 243999), (84, 232380), (90, 216888), (105, 185904), (108, 180740), (112, 174285), (120, 162666), (126, 154920), (135, 144592), (140, 139428), (144, 135555), (168, 116190), (180, 108444), (189, 103280), (210, 92952), (216, 90370), (240, 81333), (252, 77460), (270, 72296), (280, 69714), (315, 61968), (336, 58095), (360, 54222), (378, 51640), (420, 46476), (432, 45185), (504, 38730), (540, 36148), (560, 34857), (630, 30984), (720, 27111), (756, 25820), (840, 23238), (945, 20656), (1008, 19365), (1080, 18074), (1260, 15492), (1291, 15120), (1512, 12910), (1680, 11619), (1890, 10328), (2160, 9037), (2520, 7746), (2582, 7560), (3024, 6455), (3780, 5164), (3873, 5040)]